The number of people living in New Zealand who were born outside the country has topped a million with a drop in Aussies, Census figures reveal.

The much-maligned possum and Queensland fruit fly are not the only Australians to jump the Tasman and call New Zealand home, but the number of people doing the same is on the wane.

Fewer Australians are living New Zealand now than seven years ago, despite a big jump in the overall number of people born overseas residing here.

More than a quarter of the 4.2 million living in the country at the time of last year’s census were born offshore, taking the number over the one million mark for the first time.

Of those, 21.5 per cent were born in England, with China second at just shy of 9 per cent.

Almost 14,000 more India-born people were living in New Zealand since the 2006 census for the nation to leapfrog Australia into third on the list of countries contributing to the population.

Thirty fewer people born in Australia were living here compared with seven years ago.

Despite England still contributing the biggest percentage, the geographic region of United Kingdom and Ireland has slipped behind Asia as the most common birthplace.

“Back in 1961, two-thirds of overseas-born people came from the United Kingdom and Ireland. By 2013, that figure had dropped to just over a quarter,” Census general manager Gareth Meech said.

Asians made up 31.6 per cent of those born outside New Zealand.

Auckland was home to more overseas-born people than any other region in New Zealand with 39.1 per cent of the city’s residents born abroad compared to 18.2 per cent for those outside the region.